<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr style="margin-bottom:4px">
    <textarea placeholder="最多吐槽140字" maxlength="140" v-model="msg"></textarea>
    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
    <div class="cmt-list">
      <div class="cmt-item" v-for="(item , i) in commentList" :key="item.add_time">
        <div
          class="cmt-title"
        >第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time|moment}}</div>
        <div class="cmt-body">{{item.content==="undefined"?'此用户很懒什么都没有写':item.content}}</div>
      </div>
    </div>
    <mt-button type="danger" size="large" plain @click="getmore">加载更多</mt-button>
  </div>
</template>

<script>
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      // id:this.$route.params.id,
      commentList: [],
      pageindex: 1,
      msg: ""
    };
  },

  methods: {
    getCommentList() {
      this.$http
        .get("api/getcomments/" + this.id + "?pageindex=" + this.pageindex)
        .then(res => {
          console.log(res.body.message);
          if (res.body.status === 0) {
            // this.commentList=res.body.message
            this.commentList = this.commentList.concat(res.body.message);
          }
        });
    },
    getmore() {
      //获取更多。。。
      this.pageindex++, this.getCommentList();
    },
    postComment() {
      //发表评论。。。
      //校验是否为空的内容
      if (this.msg.trim().length === 0) {
        return Toast("评论内容不能为空");
      }
      this.$http
        .post("api/postcomment/" + this.id, { content: this.msg.trim() })//清除空格。。。
        .then(res => {
          if (res.body.status === 0) {
            var cmt = {
              user_name: "匿名用户",
              add_time: Date.now(),
              content: this.msg.trim()
            };
            this.commentList.unshift(cmt);
            this.msg="";
          }
        });
    }
  },
  props: ["id"], //父向子传值

  created() {
    this.getCommentList();
  }
};
</script>

<style lang='less' scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }
  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        background-color: #ccc;
        line-height: 30px;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
